If you want to learn how
to clean brass, here are some tips to consider. Brass is actually
an alloy of copper and zinc. When exposed
to air, brass tends to oxidize. This is why a majority of the
brass is lacquered to prevent tarnish. There are many polishes
available in the market such as Brasso, Twinkle etc which coats
the raw metal with a thin film of oil to prevent future tarnishing.